Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 252, NWS North Platte, NE

August 7, 2011Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 7, 2011, 6:39 PM MDT for Cherry County, Nebraska. It was in force for 66 min. 11 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 7, 2011, 6:39 PM MDT (00:39 UTC)
Expired: Aug 7, 2011, 7:45 PM MDT
In force: 66 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.75 in
Wind: 70.0 mph

County Cherry County, NE

The radar

The North Platte radar (KLNX), 70 km from the middle of the area, began a volume at 00:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Aug 7, 6:40 PM MDT	HAIL 1.75	2 E Kilgore, NE
Aug 7, 6:45 PM MDT	FUNNEL CLOUD	Valentine, NE	LAW ENFORCEMENT REPORTED A FUNNEL CLOUD JUST SOUTH OF VALENTINE. PRECISE LOCATION UNKNOWN.
Aug 7, 6:50 PM MDT	TSTM WND DMG	7 Ssw Crookston, NE	BUILDING DAMAGE REPORTED ON THE PROPERTY
Aug 7, 6:53 PM MDT	TSTM WND DMG	8 Sse Crookston, NE	LOTS OF TREES DOWN OVER BUSH ROAD
Aug 7, 7:00 PM MDT	TSTM WND GST 60	28 S Valentine, NE
Aug 7, 7:01 PM MDT	TSTM WND GST 58	Valentine, NE	VALENTINE ASOS REPORTED THUNDERSTORM WIND GUST OF 58 MPH.
Aug 7, 7:02 PM MDT	TSTM WND GST 77	Valentine, NE	VALENTINE ASOS REPORTED A THUNDERSTORM WIND GUST TO 77 MPH.
Aug 7, 7:14 PM MDT	TSTM WND GST 62	27 S Valentine, NE	NWS RAWS SITE NEAR HIGHWAY 83
Aug 7, 7:15 PM MDT	TSTM WND DMG	13 Se Valentine, NE	LOTS OF TREES DOWN AS WELL AS BUILDING DAMAGE
Aug 7, 7:15 PM MDT	TSTM WND GST 80	10 Se Valentine, NE	THE VERY STRONG WINDS LASTED ABOUT 20 MIN
Aug 7, 7:15 PM MDT	HAIL 1.5	10 Se Valentine, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 7, 1:58 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.7 hours before the alert went out and 162 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2434 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 359 m²/s²
0-3 km storm-relative helicity: 467 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

490 
WUUS53 KLBF 080039
SVRLBF
NEC031-080145-
/O.NEW.KLBF.SV.W.0252.110808T0039Z-110808T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
739 PM CDT SUN AUG 7 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 845 PM CDT/745 PM MDT/

* AT 734 PM CDT/634 PM MDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF
  BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM CROOKSTON TO 11
  MILES NORTHWEST OF HIGHWAY 97 CROSSING THE NORTH LOUP RIVER...AND
  MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  HIGHWAY 97 CROSSING THE NIOBRARA RIVER AND VALENTINE AROUND 745 PM
  CDT.
  SCHLAGEL CREEK STATE WILDLIFE MANAGEMENT AREA AROUND 750 PM CDT.
  SMITH FALLS STATE PARK AND BIG ALKALI LAKE STATE WILDLIFE
  MANAGEMENT AREA AROUND 755 PM CDT.
  SPARKS AND VALENTINE NATIONAL WILDLIFE REFUGE AROUND 800 PM CDT.
  HIGHWAY 83 CROSSING GOOSE CREEK AROUND 810 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
HIGHWAY 97 MILE MARKER 110...HIGHWAY 97 MILE MARKER 100...HIGHWAY 12
MILE MARKER 10...HIGHWAY 20 MILE MARKER 210 AND WOOD LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 4222 10019 4248 10116 4300 10131 4301 10022
TIME...MOT...LOC 0038Z 286DEG 44KT 4293 10063 4252 10108
WIND...HAIL 70MPH 1.75IN

$$

ROBERG

1 follow-up statement

936 
WWUS53 KLBF 080058
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
758 PM CDT SUN AUG 7 2011

NEC031-080145-
/O.CON.KLBF.SV.W.0252.000000T0000Z-110808T0145Z/
CHERRY NE-
758 PM CDT SUN AUG 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
CHERRY COUNTY UNTIL 845 PM CDT/745 PM MDT/...

AT 753 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM VALENTINE TO BIG ALKALI LAKE
STATE WILDLIFE MANAGEMENT AREA TO 12 MILES SOUTHWEST OF VALENTINE
NATIONAL WILDLIFE REFUGE...MOVING EAST AT 60 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  SMITH FALLS STATE PARK...SPARKS AND HIGHWAY 83 CROSSING GOOSE CREEK
  AROUND 805 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE WOOD LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE NEAR 
KILGORE AND CROOKSTON. THIS IS AN EXTREMELY DANGEROUS SITUATION. 
SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4244 10100 4300 10092 4301 10022 4222 10019
TIME...MOT...LOC 0057Z 289DEG 51KT 4291 10048 4260 10048
          4241 10072
WIND...HAIL 70MPH 1.00IN

$$

ROBERG

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 7, 7:10 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha, Rock	50 min
Aug 7, 7:49 PM MDT	Severe Thunderstorm Warning	LBF	Boyd, Brown, Holt, Keya Paha, Rock	56 min
Aug 7, 8:34 PM MDT	Severe Thunderstorm Warning	LBF	Boyd, Garfield, Holt, Keya Paha, Rock, Wheeler	56 min
Aug 8, 3:35 PM MDT	Severe Thunderstorm Warning	LBF	Chase	40 min
Aug 8, 4:21 PM MDT	Severe Thunderstorm Warning	LBF	Keith	39 min
Aug 8, 4:53 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	52 min
Aug 8, 5:08 PM MDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln	52 min
Aug 8, 5:31 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Hayes, Lincoln, Perkins	74 min
Aug 8, 5:46 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	44 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.